3.4.4 INHIBIT
By applying a low level signal at pin “INH” of the connector “AIO“, the high voltage generation will be shut off immediately and will
be blocked. High voltage generation is activated with a high level signal or open contact at pin “INH” of the connector “AIO“.
CAUTION!
CAUTION!
Do not use the INHIBIT function as a safety loop.
To enable high voltage generation, both signals must enable or disable the HV. The switching states and logic operations are
shown in Table 7 Inhibit.
INHIBIT
ON
High Voltage, Function
HV inhibited
HV OFF
OFF, Reset error memory
HV inhibited
HV ON
OFF, Reset error memory
HV not inhibited
HV OFF
OFF
HV not inhibited
HV is switched ON
ON with ramp
HV not inhibited
HV is switched OFF
OFF with ramp
HV will be released
HV ON
ON with ramp
HV will be disabled
HV ON
OFF without ramp, Reset error memory
Table 7: Inhibit
3.4.5 ARC Management
For HV sources in metal box with the optionally ARC management an ARC signal is present at pin “ARC” of the connector “AIO”.
In the case of an ARC, this signal has a low level for approximately 1 millisecond.
By applying a low level signal at pin “INH” of the connector “AIO“ (INHIBIT), the ARC signal also has a low level.
For HV sources in 3UC housing with the ARC management there is no ARC signal.
Devices without option ARC
CAUTION!
CAUTION!
For devices without the ARC option, the user must ensure that the permissible number of ARCs is not exceeded.
These devices do not protect themselves against high-frequency ARCs.
The permissible number of ARCs depends on the device class, the output voltage as well as the installed options and is specified
in Table 8: Permissible number of ARCs.
Device
Number of ARCs / second
EPS without option CLD
1
EPS with option CLD
5
Table 8: Permissible number of ARCs
EPS High Voltage Power Supply series | Last changed on: 2020-12-02 |
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